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rewrite of bn_nist.c, disable support for some curves on 64 bit platforms

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for now (it was broken anyway)
This commit is contained in:
Nils Larsch 2005-05-03 20:23:33 +00:00
parent 9b62318311
commit fcb41c0ee8
2 changed files with 231 additions and 321 deletions
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550
crypto/bn/bn_nist.c
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@ -1,6 +1,9 @@
/* crypto/bn/bn_nist.c */
/*
* Written by Nils Larsch for the OpenSSL project
*/
/* ====================================================================
* Copyright (c) 1998-2002 The OpenSSL Project. All rights reserved.
* Copyright (c) 1998-2005 The OpenSSL Project. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
@ -63,69 +66,69 @@
#define BN_NIST_521_TOP (521+BN_BITS2-1)/BN_BITS2
#if BN_BITS2 == 64
const static BN_ULONG _nist_p_192[] =
static const BN_ULONG _nist_p_192[] =
{0xFFFFFFFFFFFFFFFFULL,0xFFFFFFFFFFFFFFFEULL,
0xFFFFFFFFFFFFFFFFULL};
const static BN_ULONG _nist_p_224[] =
static const BN_ULONG _nist_p_224[] =
{0x0000000000000001ULL,0xFFFFFFFF00000000ULL,
0xFFFFFFFFFFFFFFFFULL,0x00000000FFFFFFFFULL};
const static BN_ULONG _nist_p_256[] =
static const BN_ULONG _nist_p_256[] =
{0xFFFFFFFFFFFFFFFFULL,0x00000000FFFFFFFFULL,
0x0000000000000000ULL,0xFFFFFFFF00000001ULL};
const static BN_ULONG _nist_p_384[] =
static const BN_ULONG _nist_p_384[] =
{0x00000000FFFFFFFFULL,0xFFFFFFFF00000000ULL,
0xFFFFFFFFFFFFFFFEULL,0xFFFFFFFFFFFFFFFFULL,
0xFFFFFFFFFFFFFFFFULL,0xFFFFFFFFFFFFFFFFULL};
const static BN_ULONG _nist_p_521[] =
static const BN_ULONG _nist_p_521[] =
{0xFFFFFFFFFFFFFFFFULL,0xFFFFFFFFFFFFFFFFULL,
0xFFFFFFFFFFFFFFFFULL,0xFFFFFFFFFFFFFFFFULL,
0xFFFFFFFFFFFFFFFFULL,0xFFFFFFFFFFFFFFFFULL,
0xFFFFFFFFFFFFFFFFULL,0xFFFFFFFFFFFFFFFFULL,
0x00000000000001FFULL};
#elif BN_BITS2 == 32
const static BN_ULONG _nist_p_192[] = {0xFFFFFFFF,0xFFFFFFFF,0xFFFFFFFE,
static const BN_ULONG _nist_p_192[] = {0xFFFFFFFF,0xFFFFFFFF,0xFFFFFFFE,
0xFFFFFFFF,0xFFFFFFFF,0xFFFFFFFF};
const static BN_ULONG _nist_p_224[] = {0x00000001,0x00000000,0x00000000,
static const BN_ULONG _nist_p_224[] = {0x00000001,0x00000000,0x00000000,
0xFFFFFFFF,0xFFFFFFFF,0xFFFFFFFF,0xFFFFFFFF};
const static BN_ULONG _nist_p_256[] = {0xFFFFFFFF,0xFFFFFFFF,0xFFFFFFFF,
static const BN_ULONG _nist_p_256[] = {0xFFFFFFFF,0xFFFFFFFF,0xFFFFFFFF,
0x00000000,0x00000000,0x00000000,0x00000001,0xFFFFFFFF};
const static BN_ULONG _nist_p_384[] = {0xFFFFFFFF,0x00000000,0x00000000,
static const BN_ULONG _nist_p_384[] = {0xFFFFFFFF,0x00000000,0x00000000,
0xFFFFFFFF,0xFFFFFFFE,0xFFFFFFFF,0xFFFFFFFF,0xFFFFFFFF,0xFFFFFFFF,
0xFFFFFFFF,0xFFFFFFFF,0xFFFFFFFF};
const static BN_ULONG _nist_p_521[] = {0xFFFFFFFF,0xFFFFFFFF,0xFFFFFFFF,
static const BN_ULONG _nist_p_521[] = {0xFFFFFFFF,0xFFFFFFFF,0xFFFFFFFF,
0xFFFFFFFF,0xFFFFFFFF,0xFFFFFFFF,0xFFFFFFFF,0xFFFFFFFF,0xFFFFFFFF,
0xFFFFFFFF,0xFFFFFFFF,0xFFFFFFFF,0xFFFFFFFF,0xFFFFFFFF,0xFFFFFFFF,
0xFFFFFFFF,0x000001FF};
#elif BN_BITS2 == 16
const static BN_ULONG _nist_p_192[] = {0xFFFF,0xFFFF,0xFFFF,0xFFFF,0xFFFE,
static const BN_ULONG _nist_p_192[] = {0xFFFF,0xFFFF,0xFFFF,0xFFFF,0xFFFE,
0xFFFF,0xFFFF,0xFFFF,0xFFFF,0xFFFF,0xFFFF,0xFFFF};
const static BN_ULONG _nist_p_224[] = {0x0001,0x0000,0x0000,0x0000,0x0000,
static const BN_ULONG _nist_p_224[] = {0x0001,0x0000,0x0000,0x0000,0x0000,
0x0000,0xFFFF,0xFFFF,0xFFFF,0xFFFF,0xFFFF,0xFFFF,0xFFFF,0xFFFF};
const static BN_ULONG _nist_p_256[] = {0xFFFF,0xFFFF,0xFFFF,0xFFFF,0xFFFF,
static const BN_ULONG _nist_p_256[] = {0xFFFF,0xFFFF,0xFFFF,0xFFFF,0xFFFF,
0xFFFF,0x0000,0x0000,0x0000,0x0000,0x0000,0x0000,0x0001,0x0000,0xFFFF,
0xFFFF};
const static BN_ULONG _nist_p_384[] = {0xFFFF,0xFFFF,0x0000,0x0000,0x0000,
static const BN_ULONG _nist_p_384[] = {0xFFFF,0xFFFF,0x0000,0x0000,0x0000,
0x0000,0xFFFF,0xFFFF,0xFFFE,0xFFFF,0xFFFF,0xFFFF,0xFFFF,0xFFFF,0xFFFF,
0xFFFF,0xFFFF,0xFFFF,0xFFFF,0xFFFF,0xFFFF,0xFFFF,0xFFFF,0xFFFF};
const static BN_ULONG _nist_p_521[] = {0xFFFF,0xFFFF,0xFFFF,0xFFFF,0xFFFF,
static const BN_ULONG _nist_p_521[] = {0xFFFF,0xFFFF,0xFFFF,0xFFFF,0xFFFF,
0xFFFF,0xFFFF,0xFFFF,0xFFFF,0xFFFF,0xFFFF,0xFFFF,0xFFFF,0xFFFF,0xFFFF,
0xFFFF,0xFFFF,0xFFFF,0xFFFF,0xFFFF,0xFFFF,0xFFFF,0xFFFF,0xFFFF,0xFFFF,
0xFFFF,0xFFFF,0xFFFF,0xFFFF,0xFFFF,0xFFFF,0xFFFF,0x01FF};
#elif BN_BITS2 == 8
const static BN_ULONG _nist_p_192[] = {0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,
static const BN_ULONG _nist_p_192[] = {0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,
0xFE,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,
0xFF,0xFF};
const static BN_ULONG _nist_p_224[] = {0x01,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
static const BN_ULONG _nist_p_224[] = {0x01,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,
0xFF,0xFF,0xFF,0xFF,0xFF,0xFF};
const static BN_ULONG _nist_p_256[] = {0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,
static const BN_ULONG _nist_p_256[] = {0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,
0xFF,0xFF,0xFF,0xFF,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x01,0x00,0x00,0x00,0xFF,0xFF,0xFF,0xFF};
const static BN_ULONG _nist_p_384[] = {0xFF,0xFF,0xFF,0xFF,0x00,0x00,0x00,0x00,
static const BN_ULONG _nist_p_384[] = {0xFF,0xFF,0xFF,0xFF,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0xFF,0xFF,0xFF,0xFF,0xFE,0xFF,0xFF,0xFF,0xFF,0xFF,
0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,
0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF};
const static BN_ULONG _nist_p_521[] = {0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,
static const BN_ULONG _nist_p_521[] = {0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,
0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,
0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,
0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,
@ -178,181 +181,116 @@ static int _is_set_384_data = 0;
static void _init_384_data(void);
#define BN_NIST_ADD_ONE(a) while (!(++(*(a)))) ++(a);
#define __buf_0 (BN_ULONG)0
#define __buf_0_1 (BN_ULONG)0
#define __buf_0_2 (BN_ULONG)0
static void nist_cp_bn_0(BN_ULONG *buf, BN_ULONG *a, int top, int max)
{
int i;
BN_ULONG *_tmp1 = (buf), *_tmp2 = (a);
for (i = (top); i != 0; i--)
*_tmp1++ = *_tmp2++;
for (i = (max) - (top); i != 0; i--)
*_tmp1++ = (BN_ULONG) 0;
}
static void nist_cp_bn(BN_ULONG *buf, BN_ULONG *a, int top)
{
int i;
BN_ULONG *_tmp1 = (buf), *_tmp2 = (a);
for (i = (top); i != 0; i--)
*_tmp1++ = *_tmp2++;
}
#if BN_BITS2 == 64
#define BN_64_BIT_BUF(n) BN_ULONG __buf_##n = (BN_ULONG)0;
#define BN_CP_64_TO_BUF(n) __buf_##n = (a)[(n)];
#define BN_CP_64_FROM_BUF(a,n) *(a)++ = __buf_##n;
#define BN_CASE_64_BIT(n,a) case (n): __buf_##n = (a)[(n)];
#if UINT_MAX == 4294967295UL
#define nist32 unsigned int
#define BN_32_BIT_BUF(n) nist32 __buf_##n = (nist32)0;
#define BN_CP_32_TO_BUF(n) __buf_##n = ((nist32 *)(a))[(n)];
#define BN_CP_32_FROM_BUF(a,n) *((nist32)(a))++ = __buf_##n;
#define BN_CASE_32_BIT(n,a) case (n): __buf_##n = ((nist32)(a))[(n)];
#elif ULONG_MAX == 4294967295UL
#define nist32 unsigned long
#define BN_32_BIT_BUF(n) nist32 __buf_##n = (nist32)0;
#define BN_CP_32_TO_BUF(n) __buf_##n = ((nist32 *)(a))[(n)];
#define BN_CP_32_FROM_BUF(a,n) *((nist32)(a))++ = __buf_##n;
#define BN_CASE_32_BIT(n,a) case (n): __buf_##n = ((nist32)(a))[(n)];
#define bn_cp_64(to, n, from, m) (to)[n] = (from)[m];
#define bn_64_set_0(to, n) (to)[n] = (BN_ULONG)0;
/* TBD */
#define bn_cp_32(to, n, from, m) (to)[n] = (from)[m];
#define bn_32_set_0(to, n) (to)[n] = (BN_ULONG)0;
#else
#define NO_32_BIT_TYPE
#endif
#elif BN_BITS2 == 32
#define BN_64_BIT_BUF(n) BN_ULONG __buf_##n##_1 = (BN_ULONG)0;\
BN_ULONG __buf_##n##_2 = (BN_ULONG)0;
#define BN_CP_64_TO_BUF(n) __buf_##n##_2 = (a)[2*(n)+1];\
__buf_##n##_1 = (a)[2*(n)];
#define BN_CP_64_FROM_BUF(a,n) *(a)++ = __buf_##n##_1;\
*(a)++ = __buf_##n##_2;
#define BN_CASE_64_BIT(n,a) case 2*(n)+1: __buf_##n##_2 = (a)[2*(n)+1];\
case 2*(n): __buf_##n##_1 = (a)[2*(n)];
#define BN_32_BIT_BUF(n) BN_ULONG __buf_##n = (BN_ULONG)0;
#define BN_CP_32_TO_BUF(n) __buf_##n = (a)[(n)];
#define BN_CP_32_FROM_BUF(a,n) *(a)++ = __buf_##n;
#define BN_CASE_32_BIT(n,a) case (n): __buf_##n = (a)[(n)];
#define bn_cp_64(to, n, from, m) \
{ \
bn_cp_32(to, (n)*2, from, (m)*2); \
bn_cp_32(to, (n)*2+1, from, (m)*2+1); \
}
#define bn_64_set_0(to, n) \
{ \
bn_32_set_0(to, (n)*2); \
bn_32_set_0(to, (n)*2+1); \
}
#if BN_BITS2 == 32
#define bn_cp_32(to, n, from, m) (to)[n] = (from)[m];
#define bn_32_set_0(to, n) (to)[n] = (BN_ULONG)0;
#elif BN_BITS2 == 16
#define __buf_0_3 (BN_ULONG)0
#define __buf_0_4 (BN_ULONG)0
#define BN_64_BIT_BUF(n) BN_ULONG __buf_##n##_1 = (BN_ULONG)0;\
BN_ULONG __buf_##n##_2 = (BN_ULONG)0;\
BN_ULONG __buf_##n##_3 = (BN_ULONG)0;\
BN_ULONG __buf_##n##_4 = (BN_ULONG)0;
#define BN_CP_64_TO_BUF(n) __buf_##n##_4 = (a)[4*(n)+3];\
__buf_##n##_3 = (a)[4*(n)+2];\
__buf_##n##_2 = (a)[4*(n)+1];\
__buf_##n##_1 = (a)[4*(n)];
#define BN_CP_64_FROM_BUF(a,n) *(a)++ = __buf_##n##_1;\
*(a)++ = __buf_##n##_2;\
*(a)++ = __buf_##n##_3;\
*(a)++ = __buf_##n##_4;
#define BN_CASE_64_BIT(n,a) case 4*(n)+3: __buf_##n##_4 = (a)[4*(n)+3];\
case 4*(n)+2: __buf_##n##_3 = (a)[4*(n)+2];\
case 4*(n)+1: __buf_##n##_2 = (a)[4*(n)+1];\
case 4*(n): __buf_##n##_1 = (a)[4*(n)];
#define BN_32_BIT_BUF(n) BN_ULONG __buf_##n##_1 = (BN_ULONG)0;\
BN_ULONG __buf_##n##_2 = (BN_ULONG)0;
#define BN_CP_32_TO_BUF(n) __buf_##n##_1 = (a)[2*(n)];\
__buf_##n##_2 = (a)[2*(n)+1];
#define BN_CP_32_FROM_BUF(a,n) *(a)++ = __buf_##n##_1;\
*(a)++ = __buf_##n##_2;
#define BN_CASE_32_BIT(n,a) case 2*(n)+1: __buf_##n##_2 = (a)[2*(n)+1];\
case 2*(n): __buf_##n##_1 = (a)[2*(n)];
#define bn_cp_32(to, n, from, m) \
{ \
(to)[(n)*2] = (from)[(m)*2]; \
(to)[(n)*2+1] = (from)[(m)*2+1];\
}
#define bn_32_set_0(to, n) { (to)[(n)*2] = 0; (to)[(n)*2+1] = 0; }
#elif BN_BITS2 == 8
#define __buf_0_3 (BN_ULONG)0
#define __buf_0_4 (BN_ULONG)0
#define __buf_0_5 (BN_ULONG)0
#define __buf_0_6 (BN_ULONG)0
#define __buf_0_7 (BN_ULONG)0
#define __buf_0_8 (BN_ULONG)0
#define BN_64_BIT_BUF(n) BN_ULONG __buf_##n##_1 = (BN_ULONG)0;\
BN_ULONG __buf_##n##_2 = (BN_ULONG)0;\
BN_ULONG __buf_##n##_3 = (BN_ULONG)0;\
BN_ULONG __buf_##n##_4 = (BN_ULONG)0;\
BN_ULONG __buf_##n##_5 = (BN_ULONG)0;\
BN_ULONG __buf_##n##_6 = (BN_ULONG)0;\
BN_ULONG __buf_##n##_7 = (BN_ULONG)0;\
BN_ULONG __buf_##n##_8 = (BN_ULONG)0;
#define BN_CP_64_TO_BUF(n) __buf_##n##_8 = (a)[8*(n)+7];\
__buf_##n##_7 = (a)[8*(n)+6];\
__buf_##n##_6 = (a)[8*(n)+5];\
__buf_##n##_5 = (a)[8*(n)+4];\
__buf_##n##_4 = (a)[8*(n)+3];\
__buf_##n##_3 = (a)[8*(n)+2];\
__buf_##n##_2 = (a)[8*(n)+1];\
__buf_##n##_1 = (a)[8*(n)];
#define BN_CP_64_FROM_BUF(a,n) *(a)++ = __buf_##n##_1;\
*(a)++ = __buf_##n##_2;\
*(a)++ = __buf_##n##_3;\
*(a)++ = __buf_##n##_4;\
*(a)++ = __buf_##n##_5;\
*(a)++ = __buf_##n##_6;\
*(a)++ = __buf_##n##_7;\
*(a)++ = __buf_##n##_8;
#define BN_CASE_64_BIT(n,a) case 8*(n)+7: __buf_##n##_8 = (a)[8*(n)+7];\
case 8*(n)+6: __buf_##n##_7 = (a)[8*(n)+6];\
case 8*(n)+5: __buf_##n##_6 = (a)[8*(n)+5];\
case 8*(n)+4: __buf_##n##_5 = (a)[8*(n)+4];\
case 8*(n)+3: __buf_##n##_4 = (a)[8*(n)+3];\
case 8*(n)+2: __buf_##n##_3 = (a)[8*(n)+2];\
case 8*(n)+1: __buf_##n##_2 = (a)[8*(n)+1];\
case 8*(n): __buf_##n##_1 = (a)[8*(n)];
#define BN_32_BIT_BUF(n) BN_ULONG __buf_##n##_1 = (BN_ULONG)0;\
BN_ULONG __buf_##n##_2 = (BN_ULONG)0;\
BN_ULONG __buf_##n##_3 = (BN_ULONG)0;\
BN_ULONG __buf_##n##_4 = (BN_ULONG)0;
#define BN_CP_32_TO_BUF(n) __buf_##n##_1 = (a)[4*(n)];\
__buf_##n##_2 = (a)[4*(n)+1];\
__buf_##n##_3 = (a)[4*(n)+2];\
__buf_##n##_4 = (a)[4*(n)+3];
#define BN_CP_32_FROM_BUF(a,n) *(a)++ = __buf_##n##_1;\
*(a)++ = __buf_##n##_2;\
*(a)++ = __buf_##n##_3;\
*(a)++ = __buf_##n##_4;
#define BN_CASE_32_BIT(n,a) case 4*(n)+3: __buf_##n##_4 = (a)[4*(n)+3];\
case 4*(n)+2: __buf_##n##_3 = (a)[4*(n)+2];\
case 4*(n)+1: __buf_##n##_2 = (a)[4*(n)+1];\
case 4*(n): __buf_##n##_1 = (a)[4*(n)];
#define bn_cp_32(to, n, from, m) \
{ \
(to)[(n)*4] = (from)[(m)*4]; \
(to)[(n)*4+1] = (from)[(m)*4+1];\
(to)[(n)*4+2] = (from)[(m)*4+2];\
(to)[(n)*4+3] = (from)[(m)*4+3];\
}
#define bn_32_set_0(to, n) \
{ (to)[(n)*4] = (BN_ULONG)0; (to)[(n)*4+1] = (BN_ULONG)0; \
(to)[(n)*4+2] = (BN_ULONG)0; (to)[(n)*4+3] = (BN_ULONG)0; }
#endif
#endif /* BN_BITS2 != 64 */
#define BN_192_SET(d,a1,a2,a3) \
{\
register BN_ULONG *td = (d);\
BN_CP_64_FROM_BUF(td,a3); BN_CP_64_FROM_BUF(td,a2);\
BN_CP_64_FROM_BUF(td,a1);\
#define nist_set_192(to, from, a1, a2, a3) \
{ \
if (a3 != 0) bn_cp_64(to, 0, from, (a3) - 3) else bn_64_set_0(to, 0)\
bn_cp_64(to, 1, from, (a2) - 3) \
if (a1 != 0) bn_cp_64(to, 2, from, (a1) - 3) else bn_64_set_0(to, 2)\
}
int BN_nist_mod_192(BIGNUM *r, const BIGNUM *a, const BIGNUM *field,
BN_CTX *ctx)
{
int top;
int top = a->top, i;
BN_ULONG carry = 0;
register BN_ULONG *r_d, *a_d;
BN_ULONG t_d[BN_NIST_192_TOP];
BN_64_BIT_BUF(3) BN_64_BIT_BUF(4)
BN_64_BIT_BUF(5)
register BN_ULONG *r_d, *a_d = a->d;
BN_ULONG t_d[BN_NIST_192_TOP],
buf[BN_NIST_192_TOP];
top = BN_ucmp(field, a);
if (top == 0)
i = BN_ucmp(field, a);
if (i == 0)
{
BN_zero(r);
return 1;
}
else if (top > 0)
return (r == a)? 1 : (BN_copy(r ,a) != NULL);
else if (i > 0)
return (r == a) ? 1 : (BN_copy(r ,a) != NULL);
if (top == BN_NIST_192_TOP)
return BN_usub(r, a, field);
if (r != a)
if (!BN_ncopy(r, a, BN_NIST_192_TOP))
return 0;
r_d = r->d;
a_d = a->d;
top = a->top-1;
switch (top)
{
BN_CASE_64_BIT(5, a_d)
BN_CASE_64_BIT(4, a_d)
BN_CASE_64_BIT(3, a_d)
break;
default: /* a->top == field->top */
return BN_usub(r, a, field);
if (!bn_wexpand(r, BN_NIST_192_TOP))
return 0;
r_d = r->d;
nist_cp_bn(r_d, a_d, BN_NIST_192_TOP);
}
else
r_d = a_d;
BN_192_SET(t_d,0,3,3)
nist_cp_bn_0(buf, a_d + BN_NIST_192_TOP, top - BN_NIST_192_TOP, BN_NIST_192_TOP);
nist_set_192(t_d, buf, 0, 3, 3);
if (bn_add_words(r_d, r_d, t_d, BN_NIST_192_TOP))
++carry;
BN_192_SET(t_d,4,4,0)
nist_set_192(t_d, buf, 4, 4, 0);
if (bn_add_words(r_d, r_d, t_d, BN_NIST_192_TOP))
++carry;
BN_192_SET(t_d,5,5,5)
nist_set_192(t_d, buf, 5, 5, 5)
if (bn_add_words(r_d, r_d, t_d, BN_NIST_192_TOP))
++carry;
@ -373,70 +311,61 @@ int BN_nist_mod_192(BIGNUM *r, const BIGNUM *a, const BIGNUM *field,
return 1;
}
#define BN_224_SET(d,a1,a2,a3,a4,a5,a6,a7) \
{\
register BN_ULONG *td = (d);\
BN_CP_32_FROM_BUF(td,a7); BN_CP_32_FROM_BUF(td,a6);\
BN_CP_32_FROM_BUF(td,a5); BN_CP_32_FROM_BUF(td,a4);\
BN_CP_32_FROM_BUF(td,a3); BN_CP_32_FROM_BUF(td,a2);\
BN_CP_32_FROM_BUF(td,a1);\
#define nist_set_224(to, from, a1, a2, a3, a4, a5, a6, a7) \
{ \
if (a7 != 0) bn_cp_32(to, 0, from, (a7) - 7) else bn_32_set_0(to, 0)\
if (a6 != 0) bn_cp_32(to, 1, from, (a6) - 7) else bn_32_set_0(to, 1)\
if (a5 != 0) bn_cp_32(to, 2, from, (a5) - 7) else bn_32_set_0(to, 2)\
if (a4 != 0) bn_cp_32(to, 3, from, (a4) - 7) else bn_32_set_0(to, 3)\
if (a3 != 0) bn_cp_32(to, 4, from, (a3) - 7) else bn_32_set_0(to, 4)\
if (a2 != 0) bn_cp_32(to, 5, from, (a2) - 7) else bn_32_set_0(to, 5)\
if (a1 != 0) bn_cp_32(to, 6, from, (a1) - 7) else bn_32_set_0(to, 6)\
}
int BN_nist_mod_224(BIGNUM *r, const BIGNUM *a, const BIGNUM *field,
BN_CTX *ctx)
{
#ifndef NO_32_BIT_TYPE
int tmp_int;
#if BN_BITS2 != 64
int top = a->top, i;
int carry = 0;
BN_ULONG *r_d, *a_d;
BN_ULONG t_d[BN_NIST_224_TOP];
BN_32_BIT_BUF(7) BN_32_BIT_BUF(8)
BN_32_BIT_BUF(9) BN_32_BIT_BUF(10)
BN_32_BIT_BUF(11) BN_32_BIT_BUF(12)
BN_32_BIT_BUF(13)
BN_ULONG *r_d, *a_d = a->d;
BN_ULONG t_d[BN_NIST_224_TOP],
buf[BN_NIST_224_TOP];
tmp_int = BN_ucmp(field, a);
if (tmp_int == 0)
i = BN_ucmp(field, a);
if (i == 0)
{
BN_zero(r);
return 1;
}
else if (tmp_int > 0)
else if (i > 0)
return (r == a)? 1 : (BN_copy(r ,a) != NULL);
if (top == BN_NIST_224_TOP)
return BN_usub(r, a, field);
if (r != a)
if (!BN_ncopy(r, a, BN_NIST_224_TOP))
return 0;
r_d = r->d;
a_d = a->d;
tmp_int = a->top-1;
switch (tmp_int)
{
BN_CASE_32_BIT(13, a_d)
BN_CASE_32_BIT(12, a_d)
BN_CASE_32_BIT(11, a_d)
BN_CASE_32_BIT(10, a_d)
BN_CASE_32_BIT(9, a_d)
BN_CASE_32_BIT(8, a_d)
BN_CASE_32_BIT(7, a_d)
break;
default: /* a->top == field->top */
return BN_usub(r, a, field);
if (!bn_wexpand(r, BN_NIST_224_TOP))
return 0;
r_d = r->d;
nist_cp_bn(r_d, a_d, BN_NIST_224_TOP);
}
else
r_d = a_d;
BN_224_SET(t_d,10,9,8,7,0,0,0)
nist_cp_bn_0(buf, a_d + BN_NIST_224_TOP, top - BN_NIST_224_TOP, BN_NIST_224_TOP);
nist_set_224(t_d, buf, 10, 9, 8, 7, 0, 0, 0);
if (bn_add_words(r_d, r_d, t_d, BN_NIST_224_TOP))
++carry;
BN_224_SET(t_d,0,13,12,11,0,0,0)
nist_set_224(t_d, buf, 0, 13, 12, 11, 0, 0, 0);
if (bn_add_words(r_d, r_d, t_d, BN_NIST_224_TOP))
++carry;
BN_224_SET(t_d,13,12,11,10,9,8,7)
nist_set_224(t_d, buf, 13, 12, 11, 10, 9, 8, 7);
if (bn_sub_words(r_d, r_d, t_d, BN_NIST_224_TOP))
--carry;
BN_224_SET(t_d,0,0,0,0,13,12,11)
nist_set_224(t_d, buf, 0, 0, 0, 0, 13, 12, 11);
if (bn_sub_words(r_d, r_d, t_d, BN_NIST_224_TOP))
--carry;
@ -485,28 +414,28 @@ static void _init_256_data(void)
_is_set_256_data = 1;
}
#define BN_256_SET(d,a1,a2,a3,a4,a5,a6,a7,a8) \
{\
register BN_ULONG *td = (d);\
BN_CP_32_FROM_BUF(td,a8); BN_CP_32_FROM_BUF(td,a7);\
BN_CP_32_FROM_BUF(td,a6); BN_CP_32_FROM_BUF(td,a5);\
BN_CP_32_FROM_BUF(td,a4); BN_CP_32_FROM_BUF(td,a3);\
BN_CP_32_FROM_BUF(td,a2); BN_CP_32_FROM_BUF(td,a1);\
#define nist_set_256(to, from, a1, a2, a3, a4, a5, a6, a7, a8) \
{ \
if (a8 != 0) bn_cp_32(to, 0, from, (a8) - 8) else bn_32_set_0(to, 0)\
if (a7 != 0) bn_cp_32(to, 1, from, (a7) - 8) else bn_32_set_0(to, 1)\
if (a6 != 0) bn_cp_32(to, 2, from, (a6) - 8) else bn_32_set_0(to, 2)\
if (a5 != 0) bn_cp_32(to, 3, from, (a5) - 8) else bn_32_set_0(to, 3)\
if (a4 != 0) bn_cp_32(to, 4, from, (a4) - 8) else bn_32_set_0(to, 4)\
if (a3 != 0) bn_cp_32(to, 5, from, (a3) - 8) else bn_32_set_0(to, 5)\
if (a2 != 0) bn_cp_32(to, 6, from, (a2) - 8) else bn_32_set_0(to, 6)\
if (a1 != 0) bn_cp_32(to, 7, from, (a1) - 8) else bn_32_set_0(to, 7)\
}
int BN_nist_mod_256(BIGNUM *r, const BIGNUM *a, const BIGNUM *field,
BN_CTX *ctx)
{
#ifndef NO_32_BIT_TYPE
int tmp_int;
#if BN_BITS2 != 64
int i, top = a->top;
int carry = 0;
register BN_ULONG *a_d, *r_d;
BN_ULONG t_d[BN_NIST_256_TOP];
BN_ULONG t_d2[BN_NIST_256_TOP];
BN_32_BIT_BUF(8) BN_32_BIT_BUF(9)
BN_32_BIT_BUF(10) BN_32_BIT_BUF(11)
BN_32_BIT_BUF(12) BN_32_BIT_BUF(13)
BN_32_BIT_BUF(14) BN_32_BIT_BUF(15)
register BN_ULONG *a_d = a->d, *r_d;
BN_ULONG t_d[BN_NIST_256_TOP],
t_d2[BN_NIST_256_TOP],
buf[BN_NIST_256_TOP];
if (!_is_set_256_data)
{
@ -518,42 +447,34 @@ int BN_nist_mod_256(BIGNUM *r, const BIGNUM *a, const BIGNUM *field,
CRYPTO_w_unlock(CRYPTO_LOCK_BN);
}
tmp_int = BN_ucmp(field, a);
if (tmp_int == 0)
i = BN_ucmp(field, a);
if (i == 0)
{
BN_zero(r);
return 1;
}
else if (tmp_int > 0)
else if (i > 0)
return (r == a)? 1 : (BN_copy(r ,a) != NULL);
if (top == BN_NIST_256_TOP)
return BN_usub(r, a, field);
if (r != a)
if (!BN_ncopy(r, a, BN_NIST_256_TOP))
return 0;
tmp_int = a->top-1;
a_d = a->d;
r_d = r->d;
switch (tmp_int)
{
BN_CASE_32_BIT(15, a_d)
BN_CASE_32_BIT(14, a_d)
BN_CASE_32_BIT(13, a_d)
BN_CASE_32_BIT(12, a_d)
BN_CASE_32_BIT(11, a_d)
BN_CASE_32_BIT(10, a_d)
BN_CASE_32_BIT(9, a_d)
BN_CASE_32_BIT(8, a_d)
break;
default: /* a->top == field->top */
return BN_usub(r, a, field);
if (!bn_wexpand(r, BN_NIST_256_TOP))
return 0;
r_d = r->d;
nist_cp_bn(r_d, a_d, BN_NIST_256_TOP);
}
else
r_d = a_d;
nist_cp_bn_0(buf, a_d + BN_NIST_256_TOP, top - BN_NIST_256_TOP, BN_NIST_256_TOP);
/*S1*/
BN_256_SET(t_d,15,14,13,12,11,0,0,0)
nist_set_256(t_d, buf, 15, 14, 13, 12, 11, 0, 0, 0);
/*S2*/
BN_256_SET(t_d2,0,15,14,13,12,0,0,0)
nist_set_256(t_d2,buf, 0, 15, 14, 13, 12, 0, 0, 0);
if (bn_add_words(t_d, t_d, t_d2, BN_NIST_256_TOP))
carry = 2;
/* left shift */
@ -561,7 +482,7 @@ int BN_nist_mod_256(BIGNUM *r, const BIGNUM *a, const BIGNUM *field,
register BN_ULONG *ap,t,c;
ap = t_d;
c=0;
for (tmp_int=BN_NIST_256_TOP; tmp_int != 0; --tmp_int)
for (i = BN_NIST_256_TOP; i != 0; --i)
{
t= *ap;
*(ap++)=((t<<1)|c)&BN_MASK2;
@ -574,27 +495,27 @@ int BN_nist_mod_256(BIGNUM *r, const BIGNUM *a, const BIGNUM *field,
if (bn_add_words(r_d, r_d, t_d, BN_NIST_256_TOP))
++carry;
/*S3*/
BN_256_SET(t_d,15,14,0,0,0,10,9,8)
nist_set_256(t_d, buf, 15, 14, 0, 0, 0, 10, 9, 8);
if (bn_add_words(r_d, r_d, t_d, BN_NIST_256_TOP))
++carry;
/*S4*/
BN_256_SET(t_d,8,13,15,14,13,11,10,9)
nist_set_256(t_d, buf, 8, 13, 15, 14, 13, 11, 10, 9);
if (bn_add_words(r_d, r_d, t_d, BN_NIST_256_TOP))
++carry;
/*D1*/
BN_256_SET(t_d,10,8,0,0,0,13,12,11)
nist_set_256(t_d, buf, 10, 8, 0, 0, 0, 13, 12, 11);
if (bn_sub_words(r_d, r_d, t_d, BN_NIST_256_TOP))
--carry;
/*D2*/
BN_256_SET(t_d,11,9,0,0,15,14,13,12)
nist_set_256(t_d, buf, 11, 9, 0, 0, 15, 14, 13, 12);
if (bn_sub_words(r_d, r_d, t_d, BN_NIST_256_TOP))
--carry;
/*D3*/
BN_256_SET(t_d,12,0,10,9,8,15,14,13)
nist_set_256(t_d, buf, 12, 0, 10, 9, 8, 15, 14, 13);
if (bn_sub_words(r_d, r_d, t_d, BN_NIST_256_TOP))
--carry;
/*D4*/
BN_256_SET(t_d,13,0,11,10,9,0,15,14)
nist_set_256(t_d, buf, 13, 0, 11, 10, 9, 0, 15, 14);
if (bn_sub_words(r_d, r_d, t_d, BN_NIST_256_TOP))
--carry;
@ -643,31 +564,31 @@ static void _init_384_data(void)
_is_set_384_data = 1;
}
#define BN_384_SET(d,a1,a2,a3,a4,a5,a6,a7,a8,a9,a10,a11,a12) \
{\
register BN_ULONG *td = (d);\
BN_CP_32_FROM_BUF(td,a12); BN_CP_32_FROM_BUF(td,a11);\
BN_CP_32_FROM_BUF(td,a10); BN_CP_32_FROM_BUF(td,a9);\
BN_CP_32_FROM_BUF(td,a8); BN_CP_32_FROM_BUF(td,a7);\
BN_CP_32_FROM_BUF(td,a6); BN_CP_32_FROM_BUF(td,a5);\
BN_CP_32_FROM_BUF(td,a4); BN_CP_32_FROM_BUF(td,a3);\
BN_CP_32_FROM_BUF(td,a2); BN_CP_32_FROM_BUF(td,a1);\
#define nist_set_384(to,from,a1,a2,a3,a4,a5,a6,a7,a8,a9,a10,a11,a12) \
{ \
if (a12 != 0) bn_cp_32(to, 0, from, (a12) - 12) else bn_32_set_0(to, 0)\
if (a11 != 0) bn_cp_32(to, 1, from, (a11) - 12) else bn_32_set_0(to, 1)\
if (a10 != 0) bn_cp_32(to, 2, from, (a10) - 12) else bn_32_set_0(to, 2)\
if (a9 != 0) bn_cp_32(to, 3, from, (a9) - 12) else bn_32_set_0(to, 3)\
if (a8 != 0) bn_cp_32(to, 4, from, (a8) - 12) else bn_32_set_0(to, 4)\
if (a7 != 0) bn_cp_32(to, 5, from, (a7) - 12) else bn_32_set_0(to, 5)\
if (a6 != 0) bn_cp_32(to, 6, from, (a6) - 12) else bn_32_set_0(to, 6)\
if (a5 != 0) bn_cp_32(to, 7, from, (a5) - 12) else bn_32_set_0(to, 7)\
if (a4 != 0) bn_cp_32(to, 8, from, (a4) - 12) else bn_32_set_0(to, 8)\
if (a3 != 0) bn_cp_32(to, 9, from, (a3) - 12) else bn_32_set_0(to, 9)\
if (a2 != 0) bn_cp_32(to, 10, from, (a2) - 12) else bn_32_set_0(to, 10)\
if (a1 != 0) bn_cp_32(to, 11, from, (a1) - 12) else bn_32_set_0(to, 11)\
}
int BN_nist_mod_384(BIGNUM *r, const BIGNUM *a, const BIGNUM *field,
BN_CTX *ctx)
{
#ifndef NO_32_BIT_TYPE
int tmp_int;
#if BN_BITS2 != 64
int i, top = a->top;
int carry = 0;
register BN_ULONG *r_d, *a_d;
BN_ULONG t_d[BN_NIST_384_TOP];
BN_32_BIT_BUF(12) BN_32_BIT_BUF(13)
BN_32_BIT_BUF(14) BN_32_BIT_BUF(15)
BN_32_BIT_BUF(16) BN_32_BIT_BUF(17)
BN_32_BIT_BUF(18) BN_32_BIT_BUF(19)
BN_32_BIT_BUF(20) BN_32_BIT_BUF(21)
BN_32_BIT_BUF(22) BN_32_BIT_BUF(23)
register BN_ULONG *r_d, *a_d = a->d;
BN_ULONG t_d[BN_NIST_384_TOP],
buf[BN_NIST_384_TOP];
if (!_is_set_384_data)
{
@ -679,50 +600,38 @@ int BN_nist_mod_384(BIGNUM *r, const BIGNUM *a, const BIGNUM *field,
CRYPTO_w_unlock(CRYPTO_LOCK_BN);
}
tmp_int = BN_ucmp(field, a);
if (tmp_int == 0)
i = BN_ucmp(field, a);
if (i == 0)
{
BN_zero(r);
return 1;
}
else if (tmp_int > 0)
else if (i > 0)
return (r == a)? 1 : (BN_copy(r ,a) != NULL);
if (top == BN_NIST_384_TOP)
return BN_usub(r, a, field);
if (r != a)
if (!BN_ncopy(r, a, BN_NIST_384_TOP))
return 0;
r_d = r->d;
a_d = a->d;
tmp_int = a->top-1;
switch (tmp_int)
{
BN_CASE_32_BIT(23, a_d)
BN_CASE_32_BIT(22, a_d)
BN_CASE_32_BIT(21, a_d)
BN_CASE_32_BIT(20, a_d)
BN_CASE_32_BIT(19, a_d)
BN_CASE_32_BIT(18, a_d)
BN_CASE_32_BIT(17, a_d)
BN_CASE_32_BIT(16, a_d)
BN_CASE_32_BIT(15, a_d)
BN_CASE_32_BIT(14, a_d)
BN_CASE_32_BIT(13, a_d)
BN_CASE_32_BIT(12, a_d)
break;
default: /* a->top == field->top */
return BN_usub(r, a, field);
if (!bn_wexpand(r, BN_NIST_384_TOP))
return 0;
r_d = r->d;
nist_cp_bn(r_d, a_d, BN_NIST_384_TOP);
}
else
r_d = a_d;
nist_cp_bn_0(buf, a_d + BN_NIST_384_TOP, top - BN_NIST_384_TOP, BN_NIST_384_TOP);
/*S1*/
BN_256_SET(t_d,0,0,0,0,0,23,22,21)
nist_set_256(t_d, buf, 0, 0, 0, 0, 0, 23-4, 22-4, 21-4);
/* left shift */
{
register BN_ULONG *ap,t,c;
ap = t_d;
c=0;
for (tmp_int=BN_NIST_256_TOP; tmp_int != 0; --tmp_int)
for (i = BN_NIST_256_TOP; i != 0; --i)
{
t= *ap;
*(ap++)=((t<<1)|c)&BN_MASK2;
@ -732,37 +641,36 @@ int BN_nist_mod_384(BIGNUM *r, const BIGNUM *a, const BIGNUM *field,
if (bn_add_words(r_d+(128/BN_BITS2), r_d+(128/BN_BITS2),
t_d, BN_NIST_256_TOP))
++carry;
/*S2*/
BN_384_SET(t_d,23,22,21,20,19,18,17,16,15,14,13,12)
if (bn_add_words(r_d, r_d, t_d, BN_NIST_384_TOP))
/*S2 */
if (bn_add_words(r_d, r_d, buf, BN_NIST_384_TOP))
++carry;
/*S3*/
BN_384_SET(t_d,20,19,18,17,16,15,14,13,12,23,22,21)
nist_set_384(t_d,buf,20,19,18,17,16,15,14,13,12,23,22,21);
if (bn_add_words(r_d, r_d, t_d, BN_NIST_384_TOP))
++carry;
/*S4*/
BN_384_SET(t_d,19,18,17,16,15,14,13,12,20,0,23,0)
nist_set_384(t_d,buf,19,18,17,16,15,14,13,12,20,0,23,0);
if (bn_add_words(r_d, r_d, t_d, BN_NIST_384_TOP))
++carry;
/*S5*/
BN_256_SET(t_d,0,0,0,0,23,22,21,20)
nist_set_256(t_d, buf, 0, 0, 0, 0, 23-4, 22-4, 21-4, 20-4);
if (bn_add_words(r_d+(128/BN_BITS2), r_d+(128/BN_BITS2),
t_d, BN_NIST_256_TOP))
++carry;
/*S6*/
BN_384_SET(t_d,0,0,0,0,0,0,23,22,21,0,0,20)
nist_set_384(t_d,buf,0,0,0,0,0,0,23,22,21,0,0,20);
if (bn_add_words(r_d, r_d, t_d, BN_NIST_384_TOP))
++carry;
/*D1*/
BN_384_SET(t_d,22,21,20,19,18,17,16,15,14,13,12,23)
nist_set_384(t_d,buf,22,21,20,19,18,17,16,15,14,13,12,23);
if (bn_sub_words(r_d, r_d, t_d, BN_NIST_384_TOP))
--carry;
/*D2*/
BN_384_SET(t_d,0,0,0,0,0,0,0,23,22,21,20,0)
nist_set_384(t_d,buf,0,0,0,0,0,0,0,23,22,21,20,0);
if (bn_sub_words(r_d, r_d, t_d, BN_NIST_384_TOP))
--carry;
/*D3*/
BN_384_SET(t_d,0,0,0,0,0,0,0,23,23,0,0,0)
nist_set_384(t_d,buf,0,0,0,0,0,0,0,23,23,0,0,0);
if (bn_sub_words(r_d, r_d, t_d, BN_NIST_384_TOP))
--carry;
@ -820,17 +728,19 @@ int BN_nist_mod_521(BIGNUM *r, const BIGNUM *a, const BIGNUM *field,
if (!tmp)
goto err;
if (!BN_ncopy(tmp, a, BN_NIST_521_TOP))
return 0;
if (!BN_rshift(r, a, 521))
return 0;
if (tmp->top == BN_NIST_521_TOP)
tmp->d[BN_NIST_521_TOP-1] &= BN_NIST_521_TOP_MASK;
if (!bn_wexpand(tmp, BN_NIST_521_TOP))
goto err;
nist_cp_bn(tmp->d, a->d, BN_NIST_521_TOP);
tmp->top = BN_NIST_521_TOP;
tmp->d[BN_NIST_521_TOP-1] &= BN_NIST_521_TOP_MASK;
bn_correct_top(tmp);
if (!BN_rshift(r, a, 521))
goto err;
if (!BN_uadd(r, tmp, r))
return 0;
goto err;
top = r->top;
r_d = r->d;
if (top == BN_NIST_521_TOP &&

2
crypto/ec/ecp_nist.c
View File

@ -112,7 +112,7 @@ const EC_METHOD *EC_GFp_nist_method(void)
return &ret;
}
#if BN_BITS2 == 64 && UINT_MAX != 4294967295UL && ULONG_MAX != 4294967295UL
#if BN_BITS2 == 64
#define NO_32_BIT_TYPE
#endif